A Tip for Hydrangeas: Great information.

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A Tip for Hydrangeas

By rock
May 19, 2012

Remember to feed your hydrangeas acid fertilizer for blue blooms and alkaline for pink blooms.

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Name: virginiarose
Virginia
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virginiarose
May 19, 2012 3:17 AM CST
Can you buy alkaline at the garden shops? I wasn't sure how to keep them pink. *Blush*
Susan

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Name: Mary Ann
Kentucky
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Muddymitts
May 19, 2012 6:59 AM CST
I'm not sure that you need to. Here's a couple pictures of my Hydrangeas -- right next to each other -- and I feed them nothing!


Thumb of 2012-05-19/Muddymitts/e2cad7

Thumb of 2012-05-19/Muddymitts/ec8077

And a couple feet away is this young one:

Thumb of 2012-05-19/Muddymitts/f8d4c5

I think the newer varieties don't require the soil amending that the older varieties did. Shrug!
Thoughts become things -- choose the good ones. ([url=www.tut.com]www.tut.com[/url])
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
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virginiarose
May 19, 2012 7:05 AM CST
Great to hear! Thank you. I tip my hat to you.
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Sharon
Calvert City, KY (Zone 7a)
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Sharon
May 19, 2012 8:53 AM CST
In a large hydrangea bush with a large root structure the distribution of ph in the soil is going to be a little varied. Where the ph is higher, the blooms will be pinker, and will be blue where the ph is lower. If I remember correctly the element is aluminum that creates the variance in color. The higher the aluminum sulphate the pinker the bloom will be, and the opposite if blue. So that's why on a single plant there can be more than one color, including a purply tint; it all depends on the soil content where that branch's root is feeding from. Of course you can control it better if you keep the bush potted, but that could limit the size. Is that all clear as mud?? Hard to explain, you almost have to visualize it, I guess. Smiling

On the other hand, I could be totally wrong, but it seems that way to me.

If you have a bush with white blooms, they'll remain white throughout their life, but will sometimes get a pink tinge as the blooms age.



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bitbit
May 19, 2012 12:52 PM CST
Aluminum sulphate will make your soil acidic, lime will make it alkaline. Susan, your soil is naturally acidic in this area, especially if you have a lot of pine litter like I do. You could have it tested to find out exactly how much lime to add, or just start with a light amendment and add a bit more at a time until you start getting pink blooms - too alkaline can kill plants, just like too acidic can, so it's best to start slowly.

(I don't know a thing about hydrangeas, but I'm pretty decent at chemistry Whistling )

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